van dyke



i (No Mudel.) 2 Sheets-Sheet 2.

J. W. VAN DYKE.

STEAM GENERATOR. No289,182. Patented Nov. 27, 1888.

|||mnulmllnlluw Fug Q1 N. PETERS. PIwIo-Ulhuflraphn Washinglun. n. c.

UNrTED STATES PATENT omen r JOHN w. van nvkn, on BROOKLYN, new YORK.

STEAM-GENERATO R.

SPFCIFIGATIQN forming part of Letters Patent No. 289,182, dated November 27,- 1883.

Application filed March 5, 1883.

To aZZ whom it may concern.-

Be it known that I, JOHN XV. VAN DYKE, of Brooklyn, in the county of Kings and State of New York, have invented certain Improvements in Steam-Generators, of which the following is a specification.

This invention relates to that class of tubular boilers, so called, in which the water-tubes are placed at an angle to the horizontal, but sloping alternately in opposite directions, thereby forming vertical series of horizontal zigzag tubes joined at their ends by suitable headers or connections.

- The object of thisinvention is to provide a steam-generator of the class mentioned in which provision shall be made for the adequate circulation of the water, for the coin 1 struction and support of the generator itself independent of supporting-walls, and for the maintenance of the tubes in the requisite position without interfering with the passage of the hot products of combustion of the furnace from end to end of the apparatus.

A further object of the invention is to provide for maintaining the tightness of the horizontal flame-deflecting partitions, which direct the hot products of combustion from-the furnace into the requisite relation andcontact with the tubes.

My said invention comprises certain novel combinations of parts whereby said objects are secured.

Figure 1 is a longitudinal sectional view of a steam-boiler made according to my said invention. Fig. 2 is a front view and partial vertical transverse section of the same. Fig.

3 is a rear view and partial vertical transverse section of the same, and Fig. 4 is a transverse view of one of the supporting- -links.

A is the usual firebox, and B the posterior space to whichthe gaseous products of cornbustion pass immediately as they leave the .(No model.)

posed of hollow castings, the outer sides of which are provided with removable plates at, by which, on occasion, access may be had. to their interiors. The inner sides of said head ers E are provided with circular openings, as at b, into which the adjacent ends of the tubes 0 and D are inserted, as represented in Fig. 1, and tightened by any suitable means.

The headers E at the front of the boiler have I their shoulders or projections 0 raised upon similar projections or shoulders, (I, provided at theinnersides of vertical columns F, which latter rest upon any suitable foundation. The

headers E at the front of the boiler are there- This casting a tight joint made around the said neck and between the same and the edges of the opening. This neck 6 constitutes the inlet from the uppermost series of tubes to the interior of the steam-drum H, and is extended upward within the said steam-drum to a height suflicient to prevent the volume of water in the latter from tending to regurgitate backward and downward through the uppermost series of the tubes. when desired, the casting G may be formed without the neck 6, and made to simply communicate with thebottom of the steam-drum H, in which case, however, a transverse partition is provided within the steam-drum and extended upward to a degree corresponding to that hereinbefore described with reference to the said neck 0, the office of t said partition being the same as that of the neck enamely, to prevent the reflow of the Volume of water contained in the main portion of the steam-drum downward or backward through the tubes. The hcadersE at the rear of the boiler rest upon shoulders or projectionsf, provided 011 the adjacent inner sides of vertical tubular pillars I, the lower ends of which are enlarged, as shown at g, and which rest upon anysuitable foundation. Theheaders at the rear of the apparatus are therefore separately andindependently suspended upon the tubular pillars I in very much the same] tion in proportion as the inlet of' the feed mannerxthat the headers at the front of the boiler are suspended on the columns F. The rearmost ends of the lowermost series of tubes communicate with a horizontal tubular casting, K, the ends of which are bolted or otherwise secured to the adjacent inner sides of the tubular pillars I, and which, by suitable openings provided in the said ends, and also in the adjacent sides of said tubular pillars I, communicate with the interior of the latter. The localities of communication between the casting K and the tubular pillars I are above the enlarged lower portions, g, of the said pillars. Said portions 9 constitute drums,which may be furnished with suitable blow off cocks, h.

I Extending across from thetop of one of the tubular pillars I to that of the other is a hollow casting, L, the interior of which communi'cat'e's with the interiors of the said pillars, as shown at m, and also with the interior of the r'earmost end of the steam-drum H, as shown at n, so that the water, as indicated by the arrows in Fig. 1, may circulate alternately from one to the other of the tubes 0 Dthrough the headers E, thence through the casting G 1 into the front of the steam-drum, thence downward'froni the rear of the latter through the casting L, through the tubular pillars I, and thence through the casting K to the lowermost of the tubes, and so on continuously.

ed as the same descends from the rearmost end of the steam-drum, and becomes intermingled therewith to such an extent that the volume of water is of substantially uniform tempera- A ture by the time it reaches the lowermost of the tubes, thereby reducingto a minimum any liability of expansion or contraction from changes of temperature in the generator.

Provided near each end of the casting L that is to say, in the passages from said cast ing L to the tubular pillars I-arc valves N, arranged to swing outward and to shut inward, so that while the said valves open to permit the circulation of the water in the directions hereinbefore explained, they close in frequently experienced in steam-boilers of the class to which my invention relates. It is obvious that the same results will be obtained if the position of the valves N is shifted from 1 their location in the casting L to the interior of the tubular pillars I; or, in fact, the said valves'are located at any place between the passage a and the ends of the lower series of tubes. In like manner the position of the feed-inlets m may be changed to any desired position between the passage n and the lowermost-of the tubes; but the admixture of the feed-water with the least-heated water from the steam drum II will approximate comple- The feed-water is introduced to the casting L, so that itmingles with the water the least heatis adjacent to the passage n.

It will be observed that the tubular pillars I constitute a vertical water-chamber independent of the connection between the series of tubes through their headers, which said vertical water-chamber affords a means whereby the relatively-cold feed-water maybe min gled with the least heated of the water circulating through the boiler, and thereby constitute a heating portion of the boiler, which prevents strain from expansion and contraction upon other portions of the boiler. The casting L should be provided with man-holes, covered with suitable manhole plates, 4', in order that, on occasion, access may be had to the valves N, to the feed-inlets, c. In order that the flame and hot gaseous pro ducts of combustion from the fire-box A may be directed into the most advantageous relation and contact with the tubes 0 and Das, for example, as indicated by the curved arrows in Fig. lthere is provided substantiallyhori= zontally between the tubes fire-proof partitions R and S, the lowermost of which extends from the front nearly but not quite to the rear of the apparatus, while the uppermost extends from the back nearly but not quite to the front. This arrangement, however, may be modified according to the size of the boiler, and according as it is desired to allow the hot gaseous products of combustion to escape from an uptake at the front or at the rear. These partitions are composed, preferably, of light fire-proof tiles laid directly upon the tubes 0 and D. By this means the construction is greatly simplified and a better heating effect obtained, for by placing the tiles or flamedeflecting partitions directly upon the tubes separate supports therefor are thereby dispensed with, while the heat absorbed by the tiles from the flames or gases is afterward given out by direct conduction and close radiation to the tubes with which they directly contact, the transmission ordiifusion of heat being thus obviously more effective than if the tiles were separated from These grooves are filled with fire clay or any suitable cementing material,which,

from its position exposed to great heat, will harden. The fire-clay or cement constitutes a wedge-like filling, which, in the event of the shrinkage of the tiles or of the shrinking of the cement itself, drops down to the bottom of the wedge-like grooves a, and therebytends to keep the same substantially tight or closed, and thus maintains the integrity of the partition.

The horizontal spaces between theheaders at the two ends of the apparatus are filled in with bricks, as indicated in the drawings. Formed in this brick-work may be openings T, which, in the normal use of the boiler, may be closed by suitable plates, but which,when unclosed, afford access to the tubes 0 and D,

the partitions It and S, &c. for inspection, cleaning, repairing, and thelike. Each of the tubes 0 or D, as the case may be, is suspended by links V, which may be either, as represented in Fig. 4, composed of duplicate rings cast in one with each other, or of simply oblong links, so that by this means the central portions of the tubes of the generator are connected, the one suspended from the other, and the one e11- abled by its strength to assist the strength of the others. Vhen desired, a strap (not shown) may connect the uppermost of thelinks Vwith the steam-drum H,which latter, from its cylindrical form, is enabled to support without detriment a material portion of its weight on the central portion of the tubes. a

I am aware of Patent No. 136,453, and make no claim to the construction shown therein, as I deem it essentially different from myinvention.

That I claim as my invention isp 1. The combination, in a boiler of the described class, with the steam-drum H and an oppositely-inclined series of pipes, O D, discharging into said drum, of the hollow supporting-pillars I I, connecting at the top with said drum, and the transverse header K, connected at each end with and supported by said pillars at or near the base thereof, and from which the initial end of said series of opposite ly-inclined tubes issues, substantially as and for the purpose set forth.

2. The combinatiomwith thesteam drum H, the casting L, and tubular supporting-pillars 1, connecting with said casting, of the oppositely-inclined tubes 0 D, arranged as shown, and theirheaders E, arranged between and supported by said pillars.

3. The combinatiomwith the steam-drum H and casting L, of the water-pillars I I, connecting with said casting and supporting the front of the drum, and the columnsF, supporting the rear of the drum,with the oppositely-inclined .clined tubes 0 and D, suitably connected at their ends, the steam-drum H, tubular pillars I, casting L, forming a direct connection between the top of the pillars and the drum, and valves N, the parts being constructed and arranged in relation with each other substantially as and for the purpose herein set forth.

5. The combination,with the tubes 0 and D, suitably connected at their ends, of the system of links V, arranged upon the said tubes to connect and mutually support the same, substantially as and for thepurpose herein set forth.

6. The combination,with the tubes (land D, suitably connected at their ends, of substantially horizontal flame-deflecting partitions composed of tiles or plates of heat-resisting material, having their upper edges beveled and laid edge to edge directly upon and sup ported by the said tubes, and the grooves thus formed by the adjacent beveled edges filled with cement, fire-clay, or the like, forming wedge-shaped fillings, substantially as and for the purpose set forth.

JOHN WV. VAN DYKE.

Witnesses:

EDWARD A. HOLLEY, RUDOLF H. RJELLMAN. 

